PIXMA MX922 is out of color ink but I want to print in black and white - can I override?

My PIXMA won't print because it says the yellow and magenta print cartridges are low in ink - I only want to print in standard black and white, but even though there is no color in my document and I have switched the settings to grayscale, it still won't print. Is there a way to override this?

Re: PIXMA MX922 is out of color ink but I want to print in black and white - can I override?

Just want to point out that this is CORPORATE EVIL at its slimiest best:

The printer is DESIGNED to waste ink every day through the phoney "auto maintenance" feature that we all lived for decades without the need of.

I've had ENTIRE cartridges of color ink run dry before I've EVER PRINTED A SINGLE COLOR PAGE.

And now -- on top of that -- they've figured out how to make their product even MORE unuseful, by REQUIRING that ALL the ink wells be FILLED in order to print ANYTHING [hence, they have ensured that every single customer, regardless of how that customer might ACTUALLY wish to use their Canon printer, has to shell out money for ink cartridges that are DESIGNED to run out of ink WITHOUT EVEN USING THEM].

Re: PIXMA MX922 is out of color ink but I want to print in black and white - can I override?

I agree! that is disgusting. I have NEVER (before this) had a printer that would not print in BLACK AND WHITE when my COLOR cartridges are empty! what a joke... rethinking my purchase and I will be sure to purchase something new without this great little feature... this is definitely some money-greedy BS. if I don't want ANY color on my page, what the hell is the point of having to have my COLOR cartridges full to print in B&W only?!